A heating and hot-water supply apparatus shortens the time taken for hot-water supply to stabilize at a set temperature in response to a request for a hot-water supply operation during a heating operation. The apparatus performs, using a common heating medium heated by a heater, a heating operation by circulating the heating medium through a heating terminal, and a hot-water supply operation of heating service water through heat exchange with the heating medium circulated through a hot-water supply heat exchanger and supplying hot water. A distribution unit (three-way valve) changes a distribution ratio of the heating medium between the heating terminal and the hot-water supply heat exchanger. A controller controls an amount of heat generated by the heater for the heating operation or the hot-water supply operation, and stops heating with the heater when the temperature of the heating medium reaches a predetermined upper-limit temperature.

Disclosed embodiments include apparatuses, systems, and methods for circulating and managing temperature of a liquid in a vessel. An illustrative embodiment includes an apparatus having a control section with a pump to receive liquid and expel the liquid via a pump outlet, a temperature interface to modulate a supply of energy, and a control interface to direct operation of the pump and the temperature control interface. An immersible section is configured to be at least partially immersed in the liquid and includes at least one temperature control surface to heat the liquid in response to the energy received from the temperature interface, a pump inlet to draw the liquid into the pump, and a filtration housing covering the at least one temperature control surface and the pump inlet to prevent particles over a predetermined size from passing into the pump inlet and coming into contact with the at least one temperature control surface.

A hot water supply device includes a heater, a water channel, a mixing valve unit, and a circulation mechanism. The mixing valve unit has a valve member and a drive unit configured to drive the valve member to change a mixing ratio of supply water heated by the heater and unheated water. The circulation mechanism has: a connection passage that connects the water channel to the heater by being branched from a part of the water channel between the mixing valve unit and the heater; an on-off valve that opens and closes the connection passage; and a pump configured to return the supply water remaining in the water channel through the connection passage to the heater. A drive amount acquisition unit acquires a drive amount of the drive unit, and a controller controls the circulation mechanism based on the drive amount acquired by the drive amount acquisition unit.

A heating and hot-water supply apparatus performs a heating operation by heating a heating medium with a heater and circulating the heating medium through a heating terminal, a hot-water supply operation by circulating the common heating medium through a hot-water supply heat exchanger, heating service water through heat exchange with the heating medium, and supplying hot water, and a simultaneous operation of the heating operation and the hot-water supply operation, and controls a distribution ratio of the heating medium between the heating terminal and the hot-water supply heat exchanger. The apparatus determines whether the heating terminal proceeding in the heating operation is a suspendible terminal to suspend the heating operation or an unsuspendible terminal not to suspend the heating operation in response to a request for the hot-water supply operation.

Disclosed is a blade-heating heat pump cover and a heat pump. By providing the mounting slot on the cover body in a direction of protruding from the second surface to the first surface, and providing the heating element in the mounting slot, the application makes the heating element be provided on the cover body without contacting the liquid medium, and the liquid medium be heated through the cover body, thus avoiding the occurrence of leakage caused by corrosion of the heating element by the liquid medium; by providing the heating wire in the heating element, and bending and providing the heating wire in the first end of the heating element for heating, and one part of the heating wire being located on the second end of the heating element being connected to the external circuit, the application is easy to install, assembly and maintain.

Disclosed is a blade-heating heat pump cover and a heat pump. By providing the mounting slot on the cover body in a direction of protruding from the second surface to the first surface, and providing the heating element in the mounting slot, the application makes the heating element be provided on the cover body without contacting the liquid medium, and the liquid medium be heated through the cover body, thus avoiding the occurrence of leakage caused by corrosion of the heating element by the liquid medium; by providing the heating wire in the heating element, and bending and providing the heating wire in the first end of the heating element for heating, and one part of the heating wire being located on the second end of the heating element being connected to the external circuit, the application is easy to install, assembly and maintain.

A valve is provided for flow regulation in a heating and/or cooling system. The valve includes a first valve unit with a first valve element and a second valve unit with a second valve element. The first valve unit and the second valve unit each have three valve ports. The first valve element and the second valve element are arranged in a common valve housing and the first and second valve elements fluidically couple, in a first valve element position, a first valve port to a third valve port and, in a second valve element position, couple a second valve port to the third valve port. The first valve element and the second valve element are movable together by an actuating apparatus into the first valve element position or the second valve element position. In addition, a system for heating and/or cooling including the valve is provided.

A heating system for a pool or spa includes at least one heating device and a controller. The controller may control and/or operate the at least one heating device in a pre-heat mode or a usage mode. The pre-heat mode may heat water of the pool or spa to a pre-heat temperature based on a first input received by the controller. The usage mode may heat the water to a set temperature greater than the pre-heat temperature based on a second input received by the controller after the first input.

A heating system for a pool or spa includes at least one heating device and a controller. The controller may control and/or operate the at least one heating device in a pre-heat mode or a usage mode. The pre-heat mode may heat water of the pool or spa to a pre-heat temperature based on a first input received by the controller. The usage mode may heat the water to a set temperature greater than the pre-heat temperature based on a second input received by the controller after the first input.

A heat pump may include a compressor configured to compress a refrigerant, a first temperature sensor provided in heating pipes connected to a heating device that heats an indoor space to sense a temperature of fluid flowing through the heating pipes, and a controller. The controller may be configured to determine whether a boiler is operating to heat an indoor space or is operating to supply hot water based on a sensing value of the first temperature sensor. The compressor may operate when the controller determines that the boiler is not operating to heat the indoor space and/or determines that the boiler is operating to supply hot water.